JFIF to JPG
Rename and re-wrap JFIF files saved from the web or email into standard JPG that every app recognizes. Free, fast and secure, no sign-up. Everything runs locally in your browser and your file is never uploaded.
3 numbered images + 1 damaged file. A real processing example.
Images are processed in this tab. Download your results before closing or refreshing.
Your finished images will appear here.
Check each image, its dimensions and file size before downloading.
Frequently asked questions
Essentially, yes. JFIF is the most common way JPEG data is packaged — the contents are JPEG, just with a different extension. Some browsers save downloads as .jfif, which a few programs won't open.
Practically none that you'd notice. Since both share the same core, this mainly fixes the extension and wrapper; image cat re-encodes at high quality with no visible difference.
It's a known Windows file-association quirk and has nothing to do with the image itself. Saving it as .jpg lets every image app open it normally.
Updated · image cat team